For what it's worth, I think the biggest reason they showed what they did at the end of the finale was to loudly point and wave around the fact that "yes, we do finally have an ending, because see, we're showing you part of it *right now* even though it's only *season three of six!*"

Also, if you don't find the speculating enjoyable, and prefer to sit pointing at your TV week after week declaring how dumb it is or something, I think the matter of who is lamer is debateable.